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Question
Match the complex ions given in Column I with the colours given in Column II and assign the correct code:
| Column I (Complex ion) | Column II (Colour) |
| A. \[\ce{[Co(NH3)6]^{3+}}\] | 1. Violet |
| B. \[\ce{[Ti(H2O)6]^{3+}}\] | 2. Green |
| C. \[\ce{[Ni(H2O)6]^{2+}}\] | 3. Pale blue |
| D. \[\ce{(Ni(H2O)4 (en)]^{2+} (aq)}\] | 4. Yellowish orange |
| 5. Blue |
Options
A - (1), B - (2), C - (4), D - (5)
A - (4), B - (3), C - (2), D - (1)
A - (3), B - (2), C - (4), D - (1)
A - (4), B - (1), C - (2), D - (3)
Solution
A - (4), B - (3), C - (2), D - (1)
Explanation:
| Column I (Complex ion) | Column II (Colour) |
| A. \[\ce{[Co(NH3)6]^{3+}}\] | 4. Yellowish orange |
| B. \[\ce{[Ti(H2O)6]^{3+}}\] | 3. Pale blue |
| C. \[\ce{[Ni(H2O)6]^{2+}}\] | 2. Green |
| D. \[\ce{(Ni(H2O)4 (en)]^{2+} (aq)}\] | 1. Violet |
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